Classify the Following into Elements, Compounds and Mixtures (a) Sodium (b) Soil (c) Sugar Solution (d) Silver (e) Calcium Carbonate (f) Tin (g) Silicon (h) Coal (i) Air (j) Soap (k) Methane (l) Carbon Dioxide (m) Blood

Answer: 

• Compound- These are mainly substances. These substances contain two or more elements. They are mainly chemically combined substances that can be together in a fixed proportion. Calcium carbonate, carbon dioxide, and Methane are compound substances.

• Elements- These refer to the basic forms of matter. Silver, Silicon, Sodium, and Tin are the elements. It is something that nothing can break into simpler substances by any chemical reaction.

• Mixture- A mixture is created when two or more substances are mixed. Sugar solution, Air, Soil, Coal, Blood, and Soap are the Mixture substances. These substances can be compounds or elements which can have a variable composition.